Re: [Qemu-devel] [PATCH v2] [WIP] [RFC ]Add initial 9pfs support for Windows hosts v2

["Michael Fritscher" <michael@fritscher.net>]

Good day,

only a short announcement: Sorry for the very long delay :-( But I'm
working on this again. The biggest issue seems to be the *at stuff. I'll
try to workaround this via getting the directories' path from the file
descriptor with the /proc (as it is already done in the 9pfs_utils) -
luckily,the mingw environment emulates the /proc. If this doesn't work
I've another idea (the file descriptors needs to be "registered" with the
path (and saved in a sparse vector or map with the fd as key and the path
as value). The "big" solution would be to write a 9p_local_windows.c from
scratch, but I would like to avoid it.

Additionally, I changed my approach: Instead of one big patch with
everything in it, I split it into 2 patch series with several patches:

  * The first one only fixes the build via adding #ifdefs, creating stubs
in os-win32.h etc. and introduces no regressions. Status: Ready in my
local repo: It compiles fine with enabled 9pfs and works. If 9pfs is
tried to use there is a clean error message that the fsdev couldn't be
initialized - as expected.
  * The second one actually get 9pfs working. This involves mostly
implementing the *at functions and a few tiny things (O_BINARY and so
on) Status: Not started yet (will be at the next weekend I hope), but is
a combination of parts of the the old patch + the implementation of the
*at functions.

My hope is that the first series could be merged independently from the
second. Meanings? If so I'll clean up the first patch series a bit
(History cleaning) and send it to the list.

Best regards,
Michael Fritscher